Finding the Fourth Proportional to 31,131.14, 42,960.96 and 16,984.08

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.14 : 42,960.96 = 16,984.08 : x
2. Step 2: Convert to fraction form
   31,131.14/42,960.96 = 16,984.08/x
3. Step 3: Cross multiply
   31,131.14x = 42,960.96 × 16,984.08
4. Step 4: Simplify right side
   31,131.14x = 729,652,381.52
5. Step 5: Solve for x
   x = 729,652,381.52/31,131.14
6. Step 6: Final answer
   x = 23,438.02